Double-winding power supply circuit
A technology of power circuit and double winding, which is applied in wind power generation, electrical components, output power conversion devices, etc. It can solve the problems of unfavorable transformer miniaturization and increase the cost of the whole machine, and achieve the effect of improving stability and saving materials
Pending Publication Date: 2018-02-23
FUJIAN FUXIN ELECTRONICS TECH CO LTD
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Problems solved by technology
[0004] figure 1 The auxiliary winding that supplies power to the PSR Controller will increase the cost of the whole machine and is not conducive to the miniaturization of the transformer
Method used
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[0029] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.
[0030] see figure 2 , a double-winding power supply circuit in this embodiment, including a high-voltage power-taking circuit 1, an on-chip power generation circuit 2, an adjustment control unit 3, an adjustment field effect transistor MOS_PSR, and a transformer;
[0031] The high-voltage power-taking circuit is used to receive a high-voltage input and step down the voltage. The on-chip power generation circuit is used to convert the output of the high-voltage power-taking circuit and output it to an adjustment control unit. The adjustment control unit is used to control and adjust the field effect The on-off of the tube, the adjustment field effect tube is used to adjust the output on the secondary winding of the transformer; wherei...
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A double-winding power supply circuit comprises a high-voltage electricity taking circuit, an on-chip power supply generation circuit, an adjustment control unit, an adjustment field effect transistorand a transformer, wherein the high-voltage electricity taking circuit is used for receiving high-voltage input and performing voltage stabilizing and voltage reducing; the on-chip power supply generation circuit is used for converting the output of the high-voltage electricity taking circuit and outputting the converted output to the adjustment control unit; the adjustment control unit is used for controlling on and off of the adjustment field effect transistor; and the adjustment field effect transistor is used for adjusting output on a transformer winding. An auxiliary winding for power supply can be saved, the high-voltage electricity taking double-winding power supply circuit can supply power for a next stage, and effects of solving the cost and saving the making process can be achieved.
Description
technical field [0001] The invention relates to the field of chip circuit design, in particular to a novel double-winding power supply circuit Background technique [0002] At present, energy technology is the key technology to promote the development of social progress and civilization. While energy-saving technologies such as lithium batteries and LED lighting are widely used, they also require the gradual improvement of related technologies, so as to further build a new energy-saving society. [0003] Existing ACDC power supply and LED lighting circuit need auxiliary winding power supply, such as figure 1 . The PSR IC (Primary Side Regulator Integrated Circuit, primary side regulator integrated circuit) in the figure only includes one module PSRController (Primary Side Regulator Controller, primary side regulator controller). The module PSRController is powered by the auxiliary winding at VCC, and the output PSR_DRV controls the primary side power transistor PSR_MOS (P...
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IPC IPC(8): H02M7/217H02M1/08
CPCH02M1/08H02M7/217Y02E10/76
Inventor 祝乃儒徐栋
Owner FUJIAN FUXIN ELECTRONICS TECH CO LTD